package com.example.demo.config;

import com.example.demo.Controller.WebSocketController;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.socket.config.annotation.EnableWebSocket;
import org.springframework.web.socket.config.annotation.WebSocketConfigurer;
import org.springframework.web.socket.config.annotation.WebSocketHandlerRegistry;
import org.springframework.web.socket.server.support.HttpSessionHandshakeInterceptor;

@Configuration
@EnableWebSocket
public class WebSocketConfig implements WebSocketConfigurer{
    @Autowired
    private WebSocketController webSocketController;
    @Override
    public void registerWebSocketHandlers(WebSocketHandlerRegistry registry){
        //通过此方法把建立好的handler类给注册到具体的路径上
        //当浏览器的webSocket的请求路径是“/xxx”时，就会调用TestWebSocketController
        registry.addHandler(webSocketController,"/WebSocketMessage")
    //通过注册这个特定的httpsession拦截器，就可以把用户的HttpSession中添加Attribute键值对
                .addInterceptors(new HttpSessionHandshakeInterceptor());
    }
}
